Quoting Brickcity 101
Nice job Adam! Also, in case you were wondering, the sirens on the ambo in the video you posted are the Federal Signal Wail and Yelp tones. (At 0:24, you can here the Rumbler Yelp tone.) If you really wanted to be unique, you could stick a Q siren on one of your ambos. ;)

Nice job Adam! Also, in case you were wondering, the sirens on the ambo in the video you posted are the Federal Signal Wail and Yelp tones. (At 0:24, you can here the Rumbler Yelp tone.) If you really wanted to be unique, you could stick a Q siren on one of your ambos. ;)